On Wed, Jul 17, 2013 at 12:08:51PM +0100, Paul Barker wrote:
> On 17 July 2013 11:45, Phil Blundell <p...@pbcl.net> wrote:
> > On Wed, 2013-07-17 at 16:40 +0800, Jesse Zhang wrote:
> >> Fix failures when building with -fno-omit-frame-pointer (and without
> >> optimization, i.e. -O0):
> >>
> >> In file included from atomic_ops.h:212:0,
> >> from atomic_ops_stack.h:32,
> >> from atomic_ops_stack.c:23:
> >> atomic_ops/sysdeps/gcc/x86.h: In function
> >> 'AO_compare_double_and_swap_double_full':
> >> atomic_ops/sysdeps/gcc/x86.h:148:3: error: 'asm' operand has
> >> impossible constraints
> >> __asm__ __volatile__("xchg %%ebx,%6;" /* swap GOT ptr and new_val1
> >> */
> >
> > This seems like it must be a bug in either GCC or the libatomic-ops
> > source code, and whichever one has the bug ought to be fixed. Forcing
> > -fomit-frame-pointer might be ok as a temporary measure but it doesn't
> > seem like a very good long-term solution.
> >
>
> If this is on x86, standard Linux desktop/server distros may have ran
> into the same problem. Maybe worth having a look if/how they handle
> this.
This makes we wonder which software on x86 relies on libatomic-ops anymore?
gcc buildins should be good enough now.
Bye Henning
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